Granted Patent
Utility
US 5,376,244 · App. 07/941,132
Electrochemical determination of oxygen concentration
Inventor:
Walter Preidel
Patented Case
View Patent ↗
Granted: Dec 27, 1994
Filed: Oct 29, 1992
Inventor
Walter Preidel
Assignee (at issue)
Siemens Aktiengesellschaft
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.